Astronaut Neil Armstrong, the first man to set foot on the moon, died on Sunday following complications with heart surgery.
It's a sad thing to see a pioneer passing away, and the online community have been honouring Armstrong and his greatest achievement, landing on the moon.
His partner on that historic descent to the lunar surface, Buzz Aldrin, described Armstrong as "the best pilot I ever knew", with a cool demeanour and a "steel trap of a mind". President Obama called Armstrong "a great American hero".
Although landing on the moon won Armstrong the highest of praise he remained a reserved, quiet man, never seeking the limelight in which he often found himself.
Perhaps the most fitting tribute to the astronaut is the one currently gaining popularity online. With over 1.3 million views and nearly 40,000 shares, a grainy black and white video has captured a massive audience online.
With a massive number of shares on Twitter and appearances on nearly 100 blogs, the famous clip of Armstrong's first words from the surface of the moon has become an online sensation.
It seems appropriate that a man who shunned fame for his incredible feats should be immortalised as an anonymous spacesuit uttering the unforgettable line; "that's one small step for man, one giant leap for mankind."